2015 YAMAHA FZ8 N fuel

PERIODIC MAINTENANCE AND ADJUSTMENT
6-14
6
EAU33032
Changin g the coolant
The coolant must be changed at the in-
tervals specified in the periodic main-
tenance and lubrication chart. Have a
Yamaha dealer change the coolant.
WARNING! Never attempt to remove the ra diator cap when the en gine is
hot.
[EWA10382] EAU49664
Replacin
g the air filter ele-
mentThe air filter element should be re-
placed at the intervals specified in the
periodic maintenance and lubrication
chart. Replace the air filter element
more frequently if you are riding in un-
usually wet or dusty areas.
1. Remove the rider seat. (See page 3-18.)
2. Remove the fuel tank cowling bolts on both sides.
3. Pull the bottom of the cowling out- ward on both sides, then remove
the cowling by moving it forward,
and then lifting it up. 4. Remove the fuel tank bolt on both
sides.
5. Lift the front of the fuel tank, and carefully tilt it back and away from
the air filter case, but do not dis-
connect the fuel hoses.
WARNING! Make sure that the
fuel tank is well supporte d. Do1. Fuel tank cowling
2. Fuel tank cowling bolt
1
2
1. Fuel tank bolt
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-15
6
not tilt or pull the fuel tank too
much, otherwise the fuel hoses
may come loose, which could
cause fuel leaka
ge an d a fire
hazar d.
[EWA10412]
6. Remove the air filter case cover by
removing the screws. NOTICE:
When removing the air filter
case cover, be careful not to al-
low forei gn o bjects to drop into
the air intake manifold .
[ECA12882]
7. Pull the air filter element out. 8. Insert a new air filter element into
the air filter case. NOTICE: Make
sure that the air filter element is
properly seated in the air filter
case. The en gine shoul d never
b e operated without the air filter
element installed , otherwise the
piston(s) an d/or cylin der(s) may
b ecome excessively worn.
[ECA10482]
9. Install the air filter case cover by
installing the screws.
10. Place the fuel tank in the original position. Make sure that the fuel
hoses are properly connected and
routed, and not pinched. Be sure
to place the fuel tank breather
hose and the fuel tank overflow
hose in the original position.
WARNING! Before placin g the
fuel tank in the ori ginal position,
make sure that the fuel hoses
are not damag ed . If any fuel
hose is damag ed , do not start
the en gine but have a Yamaha
d ealer replace the hose, other-
wise fuel may leak, creatin g a
fire hazar d.
[EWA11362]
1. Air filter case
2. Fuel tank
1. Fuel tank hose
1
2
1
1. Screw
1. Air filter element
2. Air intake manifold
1
1
1
2
2
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-16
611. Install the fuel tank bolt on bothsides.
12. Place the fuel tank cowling in the original position. 13. Install the cowling bolts on both
sides.
14. Install the rider seat.
EAU34302
A djustin g the en gine i dlin g
spee dThe engine idling speed must be
checked and, if necessary, adjusted as
follows at the intervals specified in the
periodic maintenance and lubrication
chart.
The engine should be warm before
making this adjustment.
Check the engine idling speed and, if
necessary, adjust it to specification by
turning the idle adjusting screw. To in-
crease the engine idling speed, turn
the screw in direction (a). To decrease
the engine idling speed, turn the screw
in direction (b).
1. Fuel tank overflow hose
2. Original position (paint mark)
3. Clamp
4. Fuel tank breather hose
12
43
1. Idle adjusting screw
(b)
(a)
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-17
6
TIPIf the specified idling speed cannot be
obtained as described above, have a
Yamaha dealer make the adjustment.
EAU21385
Checkin g the throttle grip free
playThe throttle grip free play should mea-
sure 3.0–5.0 mm (0.12–0.20 in) at the
inner edge of the throttle grip. Periodi-
cally check the throttle grip free play
and, if necessary, have a Yamaha deal-
er adjust it.
EAU21402
Valve clearanceThe valve clearance changes with use,
resulting in improper air-fuel mixture
and/or engine noise. To prevent this
from occurring, the valve clearance
must be adjusted by a Yamaha dealer
at the intervals specified in the periodic
maintenance and lubrication chart.
En gine i dlin g spee d:
1100–1300 r/min
1. Throttle grip free play
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-32
6battery tends to discharge more quick-
ly if the vehicle is equipped with op-
tional electrical accessories.
NOTICE
ECA16522
To char
ge a VRLA (Valve Re gulate d
Lea d Aci d) battery, a special (con-
stant-voltag e) battery char ger is re-
quired . Using a conventional b attery
char ger will damag e the b attery.To store the b attery
1. If the vehicle will not be used for more than one month, remove the
battery, fully charge it, and then
place it in a cool, dry place.
NOTICE: When removin g the
b attery, be sure the key is
turne d to “OFF”, then d iscon-
nect the neg ative lead b efore
d isconnectin g the positive lea d.
[ECA16303]
2. If the battery will be stored for
more than two months, check it at
least once a month and fully
charge it if necessary.
3. Fully charge the battery before in- stallation. NOTICE: When install-
in g the b attery, be sure the key is turned
to “OFF”, then connect
the positive lead before con-
nectin g the ne gative lea d.
[ECA16841]
4. After installation, make sure that
the battery leads are properly con-
nected to the battery terminals.NOTICE
ECA16531
Always keep the b attery charged .
Storin g a d ischar ged battery can
cause permanent battery damag e.
EAU49825
Replacin g the fusesThe main fuse, the fuel injection sys-
tem fuse, and the fuse boxes, which
contain the fuses for the individual cir-
cuits, are located under the rider seat.
(See page 3-18.)
FZ8-N1. Main fuse
2. Fuse box
3. Fuel injection system fuse
4. Fuel injection system spare fuse
1
2
3
4
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-33
6
FZ8-NA FZ8-N FZ8-NA
1. Fuse box
2. Fuel injection system fuse
3. Fuel injection system spare fuse
4. Main fuse
4
1
2
3
1. Ignition fuse
2. Signaling system fuse
3. Taillight fuse
4. Backup fuse (for clock and immobilizer sys-
tem)
5. Right radiator fan motor fuse
6. Left radiator fan motor fuse
7. Headlight fuse
8. Spare fuse
18
7
2
3
4
5
6
1. Ignition fuse
2. Signaling system fuse
3. Headlight fuse
4. Backup fuse (for clock and immobilizer sys- tem)
5. ABS solenoid fuse
6. ABS motor fuse
7. Spare fuse
8. ABS control unit fuse
9. Right radiator fan motor fuse
1
8
92
3
4
5
6
7
7
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-34
6FZ8-NA
TIPTo access the fuel injection system
fuse, remove the starter relay cover by
pulling it upward.
If a fuse is blown, replace it as follows.
1. Turn the key to “OFF” and turn off the electrical circuit in question.
2. Remove the blown fuse, and then install a new fuse of the specified
amperage. WARNING! Do not
use a fuse of a hi gher ampera ge
ratin g than recommen ded to
avoi d causin g extensive d am-
a g e to the electrical system an d
possi bly a fire.
[EWA15132]
3. Turn the key to “ON” and turn on
the electrical circuit in question to
check if the device operates.
4. If the fuse immediately blows again, have a Yamaha dealer
check the electrical system.
1. Left radiator fan motor fuse
2. Taillight fuse
3. Spare fuse
1
2
3
1. Starter relay cover
2. Fuel injection system fuse
3. Fuel injection system spare fuse
1
23
Specifie d fuses:
Main fuse:
50.0 A
Headlight fuse:
15.0 A
Taillight fuse: 10.0 A
Signaling system fuse: 10.0 A
Ignition fuse:
15.0 A
Radiator fan motor fuse: 10.0 A × 2
ABS motor fuse: FZ8-NA 30.0 A
ABS solenoid fuse:
FZ8-NA 20.0 A
Fuel injection system fuse: 15.0 A
ABS control unit fuse: FZ8-NA 7.5 A
Backup fuse:
10.0 A
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-43
6
To install the rear wheel
1. Install the wheel and the brake cal- iper bracket by inserting the wheel
axle from the left-hand side.
TIPMake sure that the slot in the
brake caliper bracket is fit over the
retainer on the swingarm.
 Make sure that there is enough
space between the brake pads
before installing the wheel.2. Install the drive chain onto the rear
sprocket.
3. Install the axle nut. 4. Lower the rear wheel so that it is
on the ground, and then put the
sidestand down.
5. Adjust the drive chain slack. (See page 6-25.)
6. Tighten the axle nut, and then tighten the locknuts to the speci-
fied torques.
EAU25872
Trou bleshootin gAlthough Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition systems,
for example, can cause poor starting
and loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems your-
self. However, should your motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look
like Yamaha parts, but they are often
inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWA15142
When checkin g the fuel system, d o
not smoke, an d make sure there are
no open flames or sparks in the ar-
ea, inclu din g pilot li ghts from water
1. Slot
2. Retainer
1
2
Ti ghtenin g torques:
Axle nut: 150 Nm (15 m·kgf, 108 ft·lbf)
Locknut:
16 Nm (1.6 m·kgf, 12 ft·lbf)
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